remove contractsManager dependency

lib/core/engine.js

@@ -170,7 +170,6 @@ class Engine {
     this.codeGenerator = new CodeGenerator({
       blockchainConfig: self.config.blockchainConfig,
       contractsConfig: self.config.contractsConfig,
-      contractsManager: this.contractsManager,
       plugins: self.plugins,
       storageConfig: self.config.storageConfig,
       namesystemConfig: self.config.namesystemConfig,

test/code_generator.js

@@ -29,12 +29,7 @@ describe('embark.CodeGenerator', function() {
       }
     ]
 
-    let generator = new CodeGenerator({blockchainConfig: {}, contractsManager: {
-      contracts: {
-        SimpleStorage: contracts[0],
-        Foo: contracts[1]
-      }
-    }});
+    let generator = new CodeGenerator({blockchainConfig: {}});
 
     describe('with EmbarkJS', function() {
       let withEmbarkJS = true;